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①-东方红-75拖拉机无负荷试车时,后轴连续弯曲。检查后轴,符合标准。进一步检查后发现,左右后托架与大梁铆合时产生变形。校正后,故障排除。②-东方红-75拖拉机,在试车过程中,连续3次拉缸。测量缸套,发现缸套尺寸偏差为下限值,而活塞尺寸偏差为上限值。这样,缸套与活塞的配合间隙为最小尺寸,加上产品制造误差,便产生了拉缸现象。改用I组活塞与Ⅱ组缸套相配合,组装后故障排除了。
① - Dongfanghong -75 tractor no load test, the rear axle continuous bending. Check the rear axle, in line with the standard. After further inspection found that left and right rear bracket and beam riveting deformation. After correction, troubleshooting. ② - Dongfanghong -75 tractor, in the test process, pull cylinder 3 times in a row. The cylinder liner was measured and the cylinder liner size deviation was found to be the lower limit value while the piston size deviation was the upper limit value. In this way, the liner and piston with the smallest gap for the gap, coupled with product manufacturing errors, they have produced a cylinder phenomenon. Switch to Group I with the second group of piston and cylinder liner, troubleshooting after assembly.